Passive voice and Past perfectOnline version El alumno reconoce la estructura gramatical correspondiente al tema objetivo. by Cristian A Villarraga L 1 Identifique en el siguiente párrafo el uso de “Passive voice”. a Elements in a given region over a long period of time. b Climate can be contrasted to weather. c Are included in climate statistics. d Which is the present condition of these same elements. 2 Identifique en el siguiente párrafo el uso de “Passive voice”. a The absorption and emission of infrared radiation by gases in the atmosphere cause the greenhouse effect. b It was proposed by Joseph Fourier in 1824 c first studied quantitatively by Svante Arrhenius in 1896. d which warms the lower atmosphere and the surface of the planet. 3 Identificar entre tres frases dadas cual corresponde con el “past perfect tense”. a But Human activity since the Industrial Revolution has increased the amount of greenhouse gases in the atmosphere. b But Human activity since the Industrial Revolution had been increasing the amount of greenhouse gases in the atmosphere. c Greenhouse gasses in the atmosphere hadn't increased significantly before the industrial revolution. d None of the above. 4 Identificar entre tres frases dadas cual corresponde con el “past perfect tense”. a A number of indicators and studies had provided evidence of global warming before we began to discuss this issue. b A number of indicators and studies have showed evidence of climate warming across the globe. c However, in recent decades, a number of indicators and studies have been showing evidence of climate warming across the globe. d All the above. 5 De la frase dada identifique cuál de las opciones es la correcta para convertirla en “passive voice”. a A. Infrared radiation absorption in the atmosphere causes the greenhouse effect. b B. The absorption and emission of infrared radiation by gases in the atmosphere had caused the greenhouse effect. c C. Greenhouse effect is caused by the absorption and emissions of infrared radiation. d D. What causes the greenhouse effect is the absorption and emission of infrared radiation by gases in the atmosphere. 6 De la frase dada identifique cuál de las opciones es la correcta para convertirla en “passive voice”. a A. There are two major effects of global warming that have been causing the increase of temperature on earth by about 3° by the year 2100 and Rise of sea levels by at least 25 m b B. The increase of temperature on earth by about 3° by the year 2100 and Rise of sea levels by at least 25 m are the cause of global warming. c C. The causes of global warming effects are the increase of temperature on earth by about 3° by the year 2100 and Rise of sea levels by at least 25 m. d D. The increase of temperature on earth by about 3° by the year 2100 and Rise of sea levels by at least 25 m are being caused by global warming. 7 De la frase dada identifique cuál de las opciones es la correcta para convertirla en “past perfect passive voice”. a A. Mary had kissed many times before her mother forbided her to date. b B. Mary had been kissed many times before that day her mother discovered her. c C. Mary had kissed many times before that day her mother discovered her. d D. Mary’s mother had forbidden her daughter to date, but she kissed many times. 8 De la frase dada identifique cuál de las opciones es la correcta para convertirla en “past perfect passive voice”. a A. The plate had been broken by the little girl, when her mother arrived. b B. Her mother had arrived when the little girl broken the plate. c C. The plate was broken when the little girl’s mother arrived. d D. When the little girl’s mother arrived, the plate had broken. 9 Con las siguientes palabras organice en forma de “past perfect passive voice”. ( “By my brother my sister arrived taken breakfast has taken” ) Written answer 10 Con las siguientes palabras organice en forma de “past perfect passive voice”. ( “By the robbers when the police had taken been money arrive.” ) Written answer
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